Assighqs to w



Jan. 29, 1929.

J. F. OCONNOR FRICTION SHOCK ABSORBING MECHANISM Ori inal Filed Dec. 5, 1925 245 B 4 5.9 J7 J4 .3/

Application filed. December 3, 1325, Serial No. 22,865. Renewed t eteber 1,

. draft .e ee of the tandem sp 'type, A I k J 1 1 including a spring and a (,LGLZlCllZtblG friction shell, thereby providing for renewal of the shell independently of the spring cage when the shell becomes worn, the shell ll: fa :l'rietion wedge s tern (.O-QPGlltlflQ, therewith, wherein the friction shell and spring cage are provided with stop elements designed to co-operate with the intermediate stop clements commonly employed in connection with draft riggings of the tandem spring tyne.

other object of the invention is to provide a friction shock absorbing mechanism of the character indicated having a spring and a friction shell and the usual main spring resistance, wherein the friction shell and cage have cooperating holding means thereon for detachably connecting he shell and ge, uei ting the cage and shell to be assembled by relative lateral movement thereof and pi venting longitudinal movement of the shell and cage with reference to each. other wl assembled and wherein the spring resi Xtends into the friction shell, )reven g the shell and cage laterz 1 it still further object of i invention is to provide a mechanism of the character set forth adaoted use in connection with stop -oloyed for use in connecthe tandem type, id detachable fric- H nee relative separatioi'i of in spring i Uthel' ob; advantages oi the iinvention will more clearly appear from the dcscription and claims hereinafter following.

lo the drawings forming a part of this 1, Figure 1 is a horizontal lon- .al, sectional view of a railway craft V illustrating my i 'ovements in connection therewith, the friction shell and snring cage and followers being shown in clan. Figure 2 is longitudinal, vertical, sectional view of the shock absorbing meeha- .lATlEli'l' QFFICEQ LILQOIS, ASSIGNOR T6 H. MINER, INCL, OF CHI- QBATEGN Ola? DEJJAVMKRE.

:LBSQREING MECHANISM.

n ism proper. Figures 3 and 4 are transverse, vertical, sectional views, corresponding respectively to the lines 3-3 and 44 of Figure 2. And Figure 5 is a detailed, uerspec- L27 VF 1 V j I i r m e view 0 L tee detachable 111051011 shell.

In said drawings, 1O indicate the usual channel shaped center or draft sills of a railway car under-frame, to the inner surfaces of which are secured side plates or stop castings 11 commonly employed in spring draft rigof the tandem type, and in connection with which my improved gear is particularly designed for use. The stop castings 11 have the usual front and rear stop shoulders 12 and 13, intermediate or middle main stop shoulders 14, front limiting shoulders 1515 and rear limiting shoulders 16-16. The inner end of the drawbar is designated by 17, to which is operatively connected a hooded cast yoke 18 of well-known form. The shock absorbing mechanism proper, hereinafter more fully described, as well as the main front and rear followers 1g and 20 are disposed within the yoke. The yoke and the par the :within are supgoi'ted in operative position by a detachable saddle plate 21.

The improvec shock absorbing mechanism proper, as shown, comprises broadly a spring cage A; a fi" :t-ion shell B; a main spring resistance member 0; a wedge block D; friction shoes E, E and F; a spring follower G and. a retainer bolt H.

The spring cage A is in the form of a hollow casing having a substantially cylindrical rear section and a substantially rcc tangular front section 31 formed integral ticrewith. At the rear end, the cage has a transverse wall 32 adapted to bear on the rear follower 20. Substantially midway between the ends and intermediate the sections 30 and 31, t casing has a pair of lateral flanges 38 adapted to cooperate with the rear intermediate n'iain shoulders i l and the corresponding lii'niting shoulders 16. The rcctangzular scction 31 is adapted to worlr itlU-cl y between the side castings as most clearly shown in Figure 1. The rectangular section 31 is open at opposite sides as most clearly shown in Figure l, thereby presenting top and bottom, horizontally disposed arms 3 l3l. The section 30 has a cylindrical bore adapted to accommodate the spring resistance C, and the arms 34: of the section 31 are provided with. concave interior surfaces forming coninuations of the side wall of the bore of the section. Ell) ill; the outer ends, the arms 2- are proriilod with verti lolly aligned slots 35 of l torm, as most clearly shown in il ignro l, a, pair ol ii'itnrnod lugs 236 being; thns "provided at, the front end of each arm. The walls ot the spring cage are preternliily thickened :1 t the outer end. as shown, slightly (lull lily; the hero ol? the cage as indi 'zited at 3T, and giving increased strength to the lugs 36.

The :tiietion shell ll is of normal cylindrical torin and has it rec lgllll't' heavy plate-like section $8 at the our end thereof ilorineil intern-o1 thermvith. 'lho plate-like section 38 projects laterally troin the opposite inictions nines ot the (iylllltlllijill section mid 't in the manner of :i follower eooperotmg with the :l'ront, intermediote main stop shoulders K and the corresponding); .iniiting shoulders At the rear end, the til ll ll hair; it pair of E- 3i; liH tnrdly V section Ill and integral therewith. [the T-shuped lngiji-i are t -f' Qltl nihin the l -iiliziortl slots of the spring tone it, therehy locking the rage and shell. together against rehit rc li'ino'itudinnl inorenien". 'lhe 'rirtioo shell :ilso h is three interior true cylindri Zll :triction surfaces 4-0 converging inwardly ot the mechanism.

The :triction shoes ll, ll. and ll are (it sin'iilar coinitrnction, except as hereinafter pointed out. l lzich shoe .6) termed. With on top and. lmltoni l shoneal h extending from the plat -l outer trno cyliinlricol friction surface l-l-U,

:nlzipted to cooper: to with the corresponding shell friction snrtmco l0 and on inner Wedge 'lzice 2, termed on the front side 0t 2:, littoral enhirg enien'l i -l of the shoe. The face 42 of the shoes ll oxtis'nls at a relatively blunt on- ,ejle With respect to the longitndinol. the inrcln ii'iisin and the {are 42 of the shoe it? extends :it o. relatively heen :ingle to said [the rear tin-es ot the eiilnr enient 4-3 hour on the w ning; tolloiver it, which is in the torn] ol 2 can. The onrifiery spring tollower ta, at i nner end, in turn hears on the tor'siziril end o l the outer coil of the main spring; resistznnro t, While the inner coil (it said iiirino' resi innce ex ends Wi thin the cup illtl hours on the inner side (it the end vrnll z thcreo't'.

The n'eiliie l) is in the term ot' :1 cost hlo lt, suitnhlr cored and having; d tlzit tronthire ll: henr ne' (li 91th, or the trout toll ill.

Al the liil (H ll the hloch l) is provided with three reiirwzirdly converging: wedge :l'nret lr. l'ti2 wronged synniiotiiriilit about the axis ot the nierhzinis 1, Two oi. the faces 1-5-2 co-iict with the faces l2 ot the two hliint nno'nlar shoes l and are correspondingly inclined thereto Whereas the ren'ininino' ilncc M2 ot the wedge is inclined to correspond with the wedn'e tacos 4;.2 ot the liloch l3 and zip hiptel to coope ate thorewitl'i.

The main spring resistance f comprises an inner relatively light coil and an outer relolively h imier coil, the former being); on the outer end of :i hollow hoss PLUJOL't'lYlQ; from the rod Willi ot the spring; cage A and the o coil hearing; at its root end on nehs ex- .ig n iii-Lilly troin si id boss and formed i: n l. 'wi i the rear Well and side \ViillS o I H hp cage. in this coinicction, it is by prevent ng; relative lateral movement o inn the friction shell, and. sinring cage and iii-renting; separation ot thise Pt, lzitrro when the mechanism is tinnlly osseinhie l,

" H which holds the mechlhe retainer holt zinisin csseniliileil, and ot ovcj'zill nni'torni length has its opposite ends anchored rospec ively to the hollow log on tl o well :32

of the spring cage and to the Wedge incnil'ier l). in znhlition to nmintuininp; the ports asseinhled, the retainer bolt holds the mechanism, including; the main spring resistance, under it predetermined initial compression, therehy compensating tor WOM." oi the various triction and Wedge tacos.

The mechanism is ossen'ihled as follows:

The T-shaped'lngs 39 ot' the friction shell l are hrongi'ht into late "ill alignment with the longed slots of the spring; and enwithin the hitter by moving the i'riclion shell laterally ,th reterenee to the spring cargo, thcrchv locking the ports in position against relative lon itndinnl moren'ient. The main spring resistance. spring follower cap i, :trie'tion shoes E, l?) and and 11min \TQClQ'O are then inserted in th spring cor e ind triction shell, and the ports secured. h r the retainer ho t l t. Inasmuch as the main spring}; resistance extends into the triction smell. and the outer (in netcr of the t k A orlcr coil of the nriin sp. sis inc-e closely 22 p5 aches in size the interim of the Friction ind spring! ign te respectively, the main resistance snhstzmtinlly prevents lotehit re movement hctween the trictioz'i and wiring! ('2 ma clleciivelv locking the parts together. L i i it w ll he eviilmi't that when the trirtion i h0il heconies worn, the some inn he readily replaced hr at new shell, it heini increl ll(fttfiour to remove the friction shoes, Wedgie, spring iti'illower, and main sprii'ig; 1{%T"t-il'.ll'i(5t elements ot the mechanism to permit dis am g fi njient oi? the shell in :1 lateral direction \Ylt.) re erenc to the cage.

The operation 01. my improved shock ah- -:orl)in o' mechanism, assuming a compression trolce, is? 18 follows: The follower 19 and the combined friction shell 11] d spring" cage will he till Ell)

lljf) ill) lit)

tree ends o l? mid erins lowing l ehnped rlolis therein, and friction shell section having 'l shnned hie; at the inner end. thereof engirl e:ihle Within oziid SlOiTS tor detachzihly 'onneetino' the [well and cope sections.

section adopted to co 1 said intermediate stops, iid shell having tcrior inwardly convergii'ig friction sur'focee; ii phi lftlll'iy of friction shoes cooperating Wi lh mid shell friction ourlincen; a wedge eng 5 nd by the other main follower said ivodge and shoes llllVlllQ; e l'JllUE lllZ Y of sets 01" eoe ernh int; Wedge feces certain of mid (to-operating to con being); (llSllOFQtl ill? rel ntively liteen wed g acting: angles with respect to th longitiulinzil axis of the mechanism and the remaining cooperating faces heing' disposed fill relatively hlunt non-Wedge-acting angles with .ii'espeet to said axis; and :1- main spring resistance Within said cage extendi into the shell and (xi-operating; With the liietion shoe.

8. In :1 rnilwiy (ll'flflrig-"ring, the C(Jll'll)l1ll1- tion with tnndem spring side platen each having; front end rem stop shonleers eiu middle 11min stop ehtmlder and. a front zini rear limiting stop shoulder; 01 :1 spring ezigi o :i friction shell det-zichohly secured to tl spring cage, said. shell co i being on) "oh longitudinally oi the rigg n said shell having: follower merino thereon at the inner end co-o ncrnitiznz; with the middle nni n stop shoulder of the side plate :nd the linf 1Q atop shoulder nt the correswmding end of the gringp; to limit the inward. and FilttiillTl movement oi the shell; :1 fiction 555%. Within the Jhelh UMl spring resistnnce inc ire-operating with the :l i'ieli i1, SljQIH.

S). in A. railway draft rigi'g ng the condinaition with side (ilSl'll n, having inzi'in i limiting slop shoulders: of ii friction lnn'iir' follower menus thereon co-o iekohle will mid limiting; flop shoulders: 21 separate spring wine detmrlmhly secured to the shell against longitudinal ino-i'ei'ucnt with respect in the some iriclion in {lilH co-oncml inn with th shell; zind spring;- rcsisstunce in one (o-o1 crn'linez' with the trictzo r.i:=.

ll]. in ii draft riggiii. the conihiinition with side costings having mete oi? noiin shoulden-s and it set elf limiting); stop shoulders; oi a s rine; cage; a friction shell having it'olloner noting; linn gee adopted to coo ernte with one set of s d nmin stop r-zhonhlere end with snid imiting ntop shoulders said spring cage liengi; elechnhly scored to the shell to hold id shell end cm against relative (lis iliicenient lo spring re:- (.iperziting i i ln 1: drn it with Hid!) costings ..,L itudinally of the meelnnisni; o

and a friction system eoshell.

rigging, the COHllJlllLlilOn having sets of main stop ohon i': J'l limiting stop ohouhlero; :1 Friction shell; o spring ent re having to]; ,ner noting; ii res eo-operahle with one of id sets of ne nhonlders and the setof uniting: ohou rs; detziohnhle inter .:onnectli edl securing the shell to the osprim;- reeieinnce; and ii friction sysiom co-ope at with the shell.

12. In e d 1 rigging the combination with side costings having" sets of main stop honlde o and n s-set of limiting stop houldci's; of or spring cage nieinher; tr lion .lllg mean 1-3 Q ell member, said inen'ihers coingrisingi; 61-18131 rote cin'itine g ezieh oi: SElUl members heme 0 ll nge; connecting means dothe spring; age casting}; to

cast on against relative diaphi e- 'tndinzdly oi' the niechnnien'ig rolngz flz'ineges on each 01. said cestin *eointnnce Within the cage; and. e or friction moons Within the shell, in-

om shoes and :i wedge pressure '1 ineinlJ-er.

in it (h l (2 "tin o having) nniin front,

i nd middle stop shoulders and front and we; or? limitingiz storm: :1 friction arena CIHJPOIllblO with said side can 11d eer comprising): :1 short friction imited trininversely between one iitiin; stops and having; a to].-

at the end iezn'est the shoulders; n relitively long coating having e trensl'ion at the end adjacent fainting; ind which nan- :ed lielwccn mid :nziin h" slop shoulders; means connecting: tl e cut ends of :in' n'o (no ings \i'herehy longijiludinzilly 2n, n coopernhle with the and spring ineenn Witl in the end eoope table with saiid eleexonerate it i 

